Taitung - Class (ex Peru Almirante Tucker-Class)
Escort Cruiser
as laid down
Length, 129.9 m x Beam, 14.0 m x Depth, 5.5 m
4535 tonnes normal displacement (4118 tonnes standard)
Main battery: 8 x 10.5-cm
Secondary battery: 4 x 8.8-cm
QF battery: 2 x 3.7-cm
Light battery: 4 x 1.5-cm
Weight of broadside: 168 kg
4 TT, 45.0 cm
Main belt, 7.5 cm; full length
Armor deck, average 4.0 cm
Conning tower, 10.0 cm
Battery armor:
Main, 2.5 cm shields / secondary, 2.5 cm
QF, 2.0 cm shields / light guns, 1.5 cm shields
Maximum speed for 22013 shaft kw = 27.00 knots
Approximate cruising radius, 6000 nm / 10 knots
Typical complement: 276-359
Estimated cost, $1.439 million (£360,000)
Remarks:
Ship has slow, easy roll; a good, steady gun platform.
Main deck secondary guns subject to being washed down in a seaway.
Distribution of weights:
Percent normal displacement:
Armament ......................... 46 tonnes = 1 pct
Armor, total ..................... 785 tonnes = 17 pct
Belt 407 tonnes = 9 pct
Deck 334 tonnes = 7 pct
C.T. 23 tonnes = 1 pct
Armament 20 tonnes = 0 pct
Machinery ........................ 1294 tonnes = 29 pct
Hull and fittings; equipment ..... 1822 tonnes = 40 pct
Fuel, ammunition, stores ......... 539 tonnes = 12 pct
Miscellaneous weights ............ 50 tonnes = 1 pct
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4535 tonnes = 100 pct
Estimated metacentric height, 0.6 m
Displacement summary:
Light ship: 3996 tonnes
Standard displacement: 4118 tonnes
Normal service: 4535 tonnes
Full load: 4851 tonnes
Loading submergence 1076 tonnes/metre
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Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.17
Shellfire needed to sink: 2162 kg = 134.6 x 10.5-cm shells (Approximates weight of penetrating shell hits needed to sink ship,not counting critical hits)
Torpedoes needed to sink: 1.0 (Approximates number of 'typical' torpedo hits needed to sink ship)
Relative steadiness as gun platform, 71 percent (50 percent is 'average')
Relative rocking effect from firing to beam, 0.10
Relative quality as a seaboat: 1.05
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Hull form characteristics:
Block coefficient: 0.45
Sharpness coefficient: 0.32
Hull speed coefficient 'M' = 7.87
'Natural speed' for length = 20.6 knots
Power going to wave formation at top speed: 55 percent
Estimated hull characteristics and strength:
Relative underwater volume absorbed by magazines and engineering spaces: 102 percent
Relative accommodation and working space: 100 percent
Displacement factor: 120 percent (Displacement relative to loading factors)
Relative cross-sectional hull strength: 1.23 (Structure weight per square metre of hull surface: 441 kg)
Relative longitudinal hull strength: 1.75 (for 4.30 m average freeboard; freeboard adjustment +0.36 m)
Relative composite hull strength: 1.27
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[Machine-readable parameters: Spring Style v. 1.2.1]
426.00 x 46.00 x 18.00; 14.10 -- Dimensions
0.45 -- Block coefficient
1912 -- Year laid down
27.00 / 6000 / 10.00; Turbine, coal fired -- Speed / radius / cruise
50 tons -- Miscellaneous weights
++++++++++
8 x 4.13; 0 -- Main battery; turrets
Central positioning of guns
Gun-shields:
4 x 3.46; 0 -- Secondary battery; turrets
Main deck battery:
2 x 1.46 -- Tertiary (QF/AA) battery
Gun-shields :
4 x 0.59 -- Fourth (light) battery
4 / 0 / 17.72 -- TT / submerged / size
++++++++++
2.95 / 2.95 / 0.00 / 0.00; 100 -- Belt armor; relative extent
1.57 / 3.94 -- Deck / CT
0.98 / 0.98 / 0.79 / 0.59 -- Battery armor
(Note: For portability, values are stored in Anglo-American units)
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as rebuilt 1926
Length, 129.9 m x Beam, 14.0 m x Depth, 5.2 m
4290 tonnes normal displacement (3899 tonnes standard)
Main battery: 6 x 15.0-cm
Secondary battery: 4 x 10.5-cm
AA battery: 4 x 3.5-cm
Light battery: 2 x 1.5-cm
Weight of broadside: 348 kg
6 TT, 55.0 cm
Main belt, 7.5 cm; ends unarmored
Armor deck, average 4.0 cm
Conning tower, 10.0 cm
Battery armor:
Main, 7.5 cm shields / secondary, 4.0 cm shields
AA, 2.0 cm shields / light guns, 2.0 cm shields
Maximum speed for 29003 shaft kw = 29.15 knots
Approximate cruising radius, 8000 nm / 12 knots
Typical complement: 265-345
Estimated cost, $5.329 million (£1.332 million)
Remarks:
Relative extent of belt armor, 114 percent of 'typical' coverage.
Magazines and engineering spaces are cramped, with poor watertight subdivision.
Distribution of weights:
Percent
normal
displacement:
Armament ......................... 96 tonnes = 2 pct
Armor, total ..................... 716 tonnes = 17 pct
Belt 313 tonnes = 7 pct
Deck 334 tonnes= 8 pct
C.T. 22 tonnes = 1 pct
Armament 46 tonnes = 1 pct
Machinery ........................ 1244 tonnes = 29 pct
Hull and fittings; equipment ..... 1644 tonnes = 38 pct
Fuel, ammunition, stores ......... 541 tonnes = 13 pct
Miscellaneous weights ............ 50 tonnes = 1 pct
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4290 tonnes = 100 pct
Estimated metacentric height, 0.6 m
Displacement summary:
Light ship: 3749 tonnes
Standard displacement: 3899 tonnes
Normal service: 4290 tonnes
Full load: 4587 tonnes
Loading submergence 1074 tonnes/metre
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Estimated overall survivability and seakeeping ability:
Relative margin of stability: 1.12
Shellfire needed to sink: 1773 kg = 37.9 x 15.0-cm shells
(Approximates weight of penetrating shell hits needed to sink ship, not counting critical hits)
Torpedoes needed to sink: 0.9 (Approximates number of 'typical' torpedo hits needed to sink ship)
Relative steadiness as gun platform, 66 percent (50 percent is 'average')
Relative rocking effect from firing to beam, 0.24
Relative quality as a seaboat: 1.02
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Hull form characteristics:
Block coefficient: 0.45
Sharpness coefficient: 0.32
Hull speed coefficient 'M' = 8.02
'Natural speed' for length = 20.6 knots
Power going to wave formation at top speed: 59 percent
Estimated hull characteristics and strength:
Relative underwater volume absorbed by magazines and engineering spaces: 113 percent
Relative accommodation and working space: 98 percent
Displacement factor: 107 percent
(Displacement relative to loading factors)
Relative cross-sectional hull strength: 0.97 (Structure weight per square metre of hull surface: 394 kg)
Relative longitudinal hull strength: 1.79 (for 4.70 m average freeboard; freeboard adjustment +0.80 m)
Relative composite hull strength: 1.03
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[Machine-readable parameters: Spring Style v. 1.2.1]
426.07 x 45.92 x 17.06; 15.42 -- Dimensions
0.45 -- Block coefficient
1926 -- Year laid down
29.15 / 8000 / 12.00; Oil-fired turbine or equivalent --
Speed / radius / cruise
50 tons -- Miscellaneous weights
++++++++++
6 x 5.91; 0 -- Main battery; turrets
Central positioning of guns
Gun-shields :
4 x 4.13; 0 -- Secondary battery; turrets
Gun-shields :
4 x 1.38 -- Tertiary (QF/AA) battery
Gun-shields :
2 x 0.59 -- Fourth (light) battery
6 / 0 / 21.65 -- TT / submerged / size
++++++++++
2.95 / 0.00 / 0.00 / 0.00; 114 -- Belt armor; relative extent
1.57 / 3.94 -- Deck / CT
2.95 / 1.57 / 0.79 / 0.79 -- Battery armor
(Note: For portability, values are stored in Anglo-American units)
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as refitted
Displacement:
3,533 t light; 3,689 t standard; 4,264 t normal; 4,724 t full load
Dimensions:
Length overall / water x beam x draught
440.35 ft / 423.23 ft x 45.93 ft x 17.06 ft (normal load)
134.22 m / 129.00 m x 14.00 m x 5.20 m
Armament:
6 - 5.00" / 127 mm guns (3x2 guns), 62.50lbs / 28.35kg shells, 1930 Model
Dual purpose guns in deck mounts with hoists
on centreline ends, majority forward
16 - 1.46" / 37.0 mm guns (4x4 guns), 1.55lbs / 0.70kg shells, 1932 Model
Anti-aircraft guns in deck mounts with hoists
on side, all amidships
16 - 0.79" / 20.0 mm guns (8x2 guns), 0.24lbs / 0.11kg shells, 1934 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
Weight of broadside 404 lbs / 183 kg
Shells per gun, main battery: 300
10 - 21.0" / 533.4 mm above water torpedoes
Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 2.95" / 75 mm 1.57" / 40 mm 1.57" / 40 mm
2nd: 0.79" / 20 mm 0.79" / 20 mm 0.79" / 20 mm
3rd: 0.79" / 20 mm 0.79" / 20 mm -
- Armour deck: 1.57" / 40 mm, Conning tower: 3.94" / 100 mm
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 38,023 shp / 28,365 Kw = 29.00 kts
Range 12,000nm at 12.00 kts
Bunker at max displacement = 1,036 tons
Complement:
263 - 342
Cost:
£0.612 million / $2.447 million
Distribution of weights at normal displacement:
Armament: 50 tons, 1.2 %
Armour: 438 tons, 10.3 %
- Belts: 0 tons, 0.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 54 tons, 1.3 %
- Armour Deck: 361 tons, 8.5 %
- Conning Tower: 22 tons, 0.5 %
Machinery: 1,217 tons, 28.5 %
Hull, fittings & equipment: 1,627 tons, 38.2 %
Fuel, ammunition & stores: 732 tons, 17.2 %
Miscellaneous weights: 200 tons, 4.7 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
4,800 lbs / 2,177 Kg = 76.8 x 5.0 " / 127 mm shells or 1.0 torpedoes
Stability (Unstable if below 1.00): 1.21
Metacentric height 2.2 ft / 0.7 m
Roll period: 13.0 seconds
Steadiness - As gun platform (Average = 50 %): 64 %
- Recoil effect (Restricted arc if above 1.00): 0.24
Seaboat quality (Average = 1.00): 1.28
Hull form characteristics:
Hull has a flush deck
Block coefficient: 0.450
Length to Beam Ratio: 9.21 : 1
'Natural speed' for length: 20.57 kts
Power going to wave formation at top speed: 59 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 25.00 degrees
Stern overhang: 6.56 ft / 2.00 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 22.64 ft / 6.90 m
- Forecastle (20 %): 16.73 ft / 5.10 m
- Mid (50 %): 16.73 ft / 5.10 m
- Quarterdeck (15 %): 16.73 ft / 5.10 m
- Stern: 16.40 ft / 5.00 m
- Average freeboard: 17.18 ft / 5.24 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 108.0 %
- Above water (accommodation/working, high = better): 97.0 %
Waterplane Area: 12,400 Square feet or 1,152 Square metres
Displacement factor (Displacement / loading): 123 %
Structure weight / hull surface area: 73 lbs/sq ft or 358 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.92
- Longitudinal: 2.28
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is adequate
Good seaboat, rides out heavy weather easily
Breakdown of Miscellaneous Weight:
- 25 tons for catapult
- 25 tons for aircraft
- 25 tons for sonar
- 25 tons for radar
- 25 tons for degaussing system
- 75 tons for crew comfort
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Ships in Class:
HICMS Jeye; laid down 1917, rebuilt 1926, refitted 1937
HICMS Taitung; laid down 1917, rebuilt 1926, refitted 1937